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89 results on '"Koeshendrajana, Sonny"'

3. Rapid and lasting gains from solving illegal fishing

Author

Cabral, Reniel B, Mayorga, Juan, Clemence, Michaela, Lynham, John, Koeshendrajana, Sonny, Muawanah, Umi, Nugroho, Duto, Anna, Zuzy, Mira, Ghofar, Abdul, Zulbainarni, Nimmi, Gaines, Steven D, and Costello, Christopher

Published
2018

4. The trophic status and estimation of fish potential production in Batur Lake, Indonesia: A preliminary study

Author

Kaban Siswanta, Ditya Yoga Candra, Anggraeni Dian Pamularsih, Pratiwi Made Ayu, Armanto Dony, Samuel, and Koeshendrajana Sonny

Subjects
Environmental sciences, GE1-350
Abstract

Lake Batur is a type of volcanic lake in Bangli Regency, Bali, Indonesia. The main problems in Lake Batur are no outlet, organic matter pollution from accumulated waste from the human population, cages, and agriculture. This study intends to investigate and evaluate the existing trophic status, the condition of the water, and fish production potential in Batur Lake. Observations were conducted at six stations in March 2023 using random purposive sampling. The status of water was calculated using the Trophic State Index (TSI), and fish yield was estimated using the Morphoedaphic Index (MEI). The findings showed that the TSI measurements of Batur Lake ranged from 54.07 to 75.25. In this condition, the lake is categorized as eutrophic. The annual fish production potential ranges from 109.9 to 210.5 kg/ha, with an average of 120.4 kg/ha. With 1600 hectares, the lake can produce 109-130 tons of fish. Based on captured fisheries statistic data in 2022, the potential value of fish production was relatively lower than the fishery production, which amounted to 576 tons. To suggest sustainable fisheries in Batur Lake, we need to maintain the existing fishing regulations and keep stabilizing the water quality.

Published
2023
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26. Indonesian aquaculture futures : An analysis of fish supply and demand in Indonesia to 2030 and role of aquaculture using the AsiaFish model

Author

Nhuong, Tran, Rodriguez, U. -Primo, Chan, Chin Yee, Phillips, Michael John, Mohan, Chadag Vishnumurthy, Henriksson, Patrik John Gustav, Koeshendrajana, Sonny, Suri, Sharon, Hall, Stephen, Nhuong, Tran, Rodriguez, U. -Primo, Chan, Chin Yee, Phillips, Michael John, Mohan, Chadag Vishnumurthy, Henriksson, Patrik John Gustav, Koeshendrajana, Sonny, Suri, Sharon, and Hall, Stephen

Abstract

This paper explores the seafood sector in Indonesia, using fish supply-demand modeling, with special focus on the growing role of aquaculture in the country's food portfolio. The paper describes six scenarios for future fish supply demand dynamics and examines the role of aquaculture growth in fish supply in Indonesia. A business as usual scenario (BAU) assumed exogenous variables of our supply-demand model following historical trends. Five alternative scenarios explored the implications of stagnant capture fisheries; export-oriented growth of aquaculture; domestic-oriented aquaculture growth; slow growth of aquaculture sector; and disease outbreaks to key aquaculture species. The BAU scenario projected that fish supply and demand in Indonesia continues to increase over time and strong aquaculture growth is critical to meet increasing demand for fish. Stagnant capture fisheries resulted in increasing fish prices and decreasing fish consumption. Export-oriented aquaculture growth benefitted fish supply and exports, but also helped lower domestic prices and thus increase consumption. An emphasis on domestic aquaculture commodities increased fish supply, providing best domestic consumption outcomes and lower consumer prices. Slow aquaculture growth reduced fish supply and led to undesirable increases in domestic prices and decreasing domestic consumption as a consequence. Disease outbreaks in shrimp and carp aquaculture resulted in a short-term reduction in aquaculture output and increasing fish prices, lowering fish consumption.

Published
2017
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